Jaw Coupling Choice System

Jaw Type Coupling Selection Process
The assortment system for determining the correct jaw coupling dimension and elastomer necessitates utilizing the charts shown on the following pages. There are actually three parts for being chosen, two hubs and one elastomer. Once the shaft size of the driver and driven of your application are from the identical diameter, the hubs selected will be the exact same. When shaft diameters vary, hubs chosen will vary accordingly.
Facts essential ahead of a coupling may be picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental situations (i.e. extreme temperature, corrosive conditions, room limitations)
Actions In Choosing A Jaw Coupling
Phase 1: Establish the Nominal Torque of the application by utilizing the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step 2: Employing the Application Services Components Chart 1 decide on the services issue which greatest corresponds for your application.
Phase 3: Determine the Design and style Torque of one’s application by multiplying the Nominal Torque calculated in Stage 1 from the Application Service Component determined in Phase 2.
Style and design Torque = Nominal Torque x Application Service Aspect
Stage 4: Working with the Spider Overall performance Information Chart 2, pick the elastomer material which very best corresponds for your application.
Stage 5: Employing the Jaw Nominal Rated Torque Chart three , locate the proper elastomer material column for that elastomer chosen in Phase 4.
Scan down this column towards the first entry exactly where the Torque Value in the acceptable column is higher than or equal towards the Style Torque calculated in Stage three.
The moment this value is found, refer to your corresponding coupling dimension in the initial column in the Jaw Nominal Rated Torque Chart three .
Refer to your maximum RPM value for this elastomer torque capability to make sure the application requirements are met. In the event the necessity isn’t satisfied at this time, yet another form of coupling can be essential to the application. Please seek advice from Lovejoy engineering for assistance.
Stage 6: Evaluate the application driver/driven shaft sizes towards the highest bore dimension readily available about the coupling selected. If coupling bore size isn’t significant adequate to the shaft diameter, decide on the following biggest coupling that should accommodate the driver/driven shaft diameters.
Step 7: Working with the UPC quantity selection table , come across the appropriate Bore and Keyway sizes required and find the quantity.